im telling you when the car is cold i get communication witha snap on computer but after it heats up no communication and there is no codes present .

i went to 4 different audi dealers they never seen it before

as for the radio the fuse was burnt i put a new one now it says safe i have the code but wont let me put it in.
the wires for the radio have not been touched

 

the satrt of the problem was the radi now i get codes ... transmission controller